Investments - Schedule of Summarized Financial Information (Detail) (Foxtel [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Foxtel [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	$ 718		$ 805
Operating income	135	[1]	100	[1]
Net income	$ 58		$ 20

[1] Includes Depreciation and amortization of $86 million and $116 million for the three months ended September 30, 2013 and 2012, respectively. Operating income before depreciation and amortization was $221 million and $216 million for the three months ended September 30, 2013 and 2012, respectively.